Starting to release the water tank from its plug so that we can cut it to size and make the top and then fit the tank in the boat

Just cut the edge from the building jig and now turned it over to start to break the plug from the water tank  

Breaking off the bracing off the plywood that made up the walls of the plug 

Release the thin plywood edge to help loosen the other sides off the plug 

One panel removed and now to remove the other sides and then clean up the top edges of water tank to make the top of the water tank.

Now release and now for the trimming u and making the top for the water tank 

Now its released the next stage can begin 

Starting to mark out the cut line for the top of the water tank 

The cut line being marked off on the outside of the water tank so it can be cut with a diamond edge disc cutter. The fitst got to make a jig to sit the tank in